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Isotope shifts and hyperfine splittings for neural platinum

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The hyperfine structure of neutral platinum lines, from hollow cathode spectra taken with the Fourier transform spectrometer at the National Solar Observatory (Kitt Peak), has been analyzed into magnetic hyperfine splitting coefficients and isotope shifts. Although the instrumental resolution was sufficient to resolve an isolated Doppler-broadened component, many of the hyperfine structures are only partially resolved due to overlapping of the components. A least-squares technique was used to fit the observed line contours to a six-parameter model of the platinum hyperfine structure. Those parameters include the Doppler width, isotope shift, and upper and lower level hyperfine splitting coefficients. Accurate isotope shifts and hyperfine splitting coefficients for many of the known levels of neutral platinum were determined from the analysis of over 100 transitions.

© 1988 Optical Society of America

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